Genes and methods for control of nematodes in plants

ABSTRACT

The present invention relates to isolated DNA sequences capable of conferring nematode resistance in plants. The isolated DNA sequences can be inserted into a DNA vector to form a transformation construct for the expression of the isolated DNA sequences in plants. The transformation construct can be introduced into plant cells. Plants expressing the isolated DNA sequences can be regenerated from the transformed cells. Methods for improving genetic traits or nematode resistance in plants are also provided, comprising transforming cells with the isolated DNA sequences and regenerating plants from the transformed cells expressing the isolated DNA sequences necessary for nematode resistance.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of U.S. Provisional Application Ser. No. 60/085,838, filed May 18, 1998.

FIELD OF THE INVENTION

The present invention relates to isolated DNA sequences involved in nematode resistance in lants. The invention also relates to methods. for improving the genetic traits for nematode resistance in plants by utilizing such isolated DNA sequences.

BACKGROUND

Plants are continually attacked by a diverse range of phytopathogenic organisms. These organisms cause substantial losses to crops each year. Traditional approaches for control of plant diseases have been the use of chemical treatment and the construction of interspecific hybrids between resistant crops and their wild-type relatives as sources of resistant germplasm. However, envvironmental and economic concerns make chemical pesticides undesirable, while the traditional interspecific breeding is inefficient and often cannot eliminate the undesired traits of the wild species. Thus, the discovery of pest and pathogen-resistant genes provides a new approach to control plant disease.

Several genes responsible for disease resistance have been identified and isolated from plants. See Staskawicz et al. (1995) Science 268:661-667. Recently, the sugar beet Hs1^(Pro-1) gene that confers resistance to the beet cyst nematode was cloned. See Cai et al. (1997) Science 275:832-834; and Moffat (1997) Science 275:757. Transformation of plants or plant tissues with the resistance genes can confer disease resistance to susceptible strains. See, for example, PCT Publication WO93/19181; and Cai et al. (1997) Science 275:832-834.

Nematode infection is prevalent in many crops. For example, soybean cyst nematode (Heterodera glycines) is a widespread pest that: causes substantial damage to soybeans every year. Such damage is the result of the stunting of the soybean plant caused by the cyst nematode. The stunted plants have smaller root systems, show symptoms of mineral deficiencies in their leaves, and wilt easily. The soybean cyst nematode is believed to be responsible for yield losses in soybeans that are estimated to be in excess of $500 million per year.

Nematicides such as Aldicarb and its breakdown products are known to be highly toxic to mammals. As a result, government restrictions have been imposed on the use of these chemicals. Thus, there is a great need for the isolation of genes that can provide an effective method of controlling nematodes without causing health and environmental problems.

SUMMARY OF THE INVENTION

This invention relates to DNA sequences isolated from soybean and maize. The sequences alone, or in combination with other sequences, confer nematode resistance in a plant. The sequences are useful in methods for the protection of plants from nematodes. Additionally, allelic variants of the resistance gene from a susceptible plant are included. In another aspect of the present invention, expression cassettes and transformation vectors comprising the isolated nucleotide sequences are disclosed. The transformation vectors can be used to transform plants and express the nematode resistance genes in the transformed cells. Plants susceptible to nematode infection can be targeted to confer nematode resistance. The transformed cells as well as the regenerated transgenic plants containing and expressing the isolated DNA and protein sequences are also disclosed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically illustrates the plasmid vector comprising a nematode resistance DNA sequence of the present invention operably linked to the ubiquitin promoter. Constitutive expression of this sequence confers resistance to nematodes in a transformed plant.

DETAILED DESCRIPTION OF THE INVENTION

Compositions and methods for the control of nematodes in susceptible plants are provided. The compositions comprise isolated proteins and DNA sequences encoding such proteins involved in nematode resistance. Such isolated DNA sequences can be transferred into plants to confer or improve nematode resistance in the transformed plants. Sequences of the invention have been isolated from maize and soybean. By “involved in nematode resistance” is intended that the proteins or sequences, either alone or in combination with other proteins or sequences, confer nematode resistance in a plant. In this manner, resistance to nematodes can be enhanced or improved in the transformed plant as at least one of the sequences required for nematode resistance is provided.

DNA sequences isolated from the genomes of maize and soybean are disclosed. The nucleotide sequences and amino acid sequences from two maize isolates are set forth in SEQ ID NOs: 1-2 and 3-4, and the corresponding sequences from two soybean isolates are set forth in SEQ ID NOs: 5-6 and 7-8. The nucleotide sequences in accordance with this invention are involved in nematode resistance in plants and may confer, alone or in combination with other sequences, nematode resistance in plants. Also discussed are DNA sequences isolated from a susceptible genotype of soybean. The nucleotide and amino acid sequences for this isolate are set forth in SEQ ID NOs: 9-10. Nucleotide sequences of the invention also include the maize and soybean nematode resistance gene sequences as contained in plasmids deposited with American Type Culture Collection (ATCC) and assigned Accession Numbers 209366, 209365, 209614, 209363, and 209364.

Using the sequence information set forth in the SEQ ID NOs or the sequences as contained in ATTC deposits assigned Accession Nos. 209366, 209365, 209614, 209363, and 209364, other plant DNA sequences comprising the nucleotide sequences disclosed above can be isolated based on sequence homology at either the amino acid or nucleotide sequence level. Any suitable molecular cloning method can be used including, but not limited to, PCR amplification and DNA hybridization. In the same manner, synthetic nucleotide sequences can be designed based on the amino acid sequences of the invention. Methods to design and make such synthetic sequences are available in the art.

In a hybridization method, the hybridization probes may be genomic DNA fragments, cDNA fragments, RNA fragments, or other cligonucleotides, and may be labeled with a detectable group such as ³²P, or any other detectable marker. Probes for hybridization can be made by labeling synthetic oligonucleotides based on the sequence of the soybean and/or maize sequence. Degenerate primers designed on the basis of conserved nucleotide or amino acid sequences in the maize and soybean sequences can additionally be used. Preparation of probes for hybridization is generally known in the art and is disclosed in Sambrook et al. (1989) Molecular Cloning: A Laboratory Manual (2d ed., Cold Spring Harbor Laboratory Press, Plainview, N.Y.), hereby incorporated by reference. The labeled probes can be used to screen cDNA or genomic libraries made from nematode resistant plants. Methods for construction of such cDNA and genomic libraries are generally known in the art and are disclosed in Sambrook et al. (1989) Molecular Cloning. A Laboratory Manual (2d ed., Cold Spring Harbor Laboratory Press, Plainview, N.Y.).

In a PCR method, the DNA or amino acid sequence encoded by the soybean or maize sequences of the invention can be aligned with each other. Nucleotide primers can be designed based on any conserved short stretches of amino acid sequences or nucleotide sequences. Pairs of primers can be used in PCR reactions for amplification of DNA sequences from cDNA or genomic DNA extracted from plants of interest. In addition, a single specific primer with a sequence corresponding to one of the nucleotide sequences disclosed herein can be paired with a primer having a sequence of the DNA vector in the cDNA or genomic libraries for PCR amplification of the sequences 5′ or 3′ to the nucleotide sequences disclosed herein. Similarly, nested primers may be used instead of a single specific primer for the purposes of the invention. Methods for designing PCR primers and PCR cloning are generally known in the art and are disclosed in Sambrook et al. (1989) Molecular Cloning. A Laboratory Manual (2d ed., Cold Spring Harbor Laboratory Press, Plainview, N.Y.).

The sequences of the invention comprise coding sequences from other plants that may be isolated according to well-known techniques; based on their sequence homology to the maize or soybean coding sequences set forth herein. In these techniques, all or part of the known coding sequence is used as a probe that selectively hybridizes to other possible nematode resistance coding sequences present in a population of cloned genomic DNA fragments or cDNA fragments (i.e., genomic or cDNA libraries) from a chosen organism. To achieve specific hybridization under a variety of conditions, such probes include sequences that are unique and are preferably at least about 10 nucleotides in length, and most preferably at least about 20 nucleotides in length. Such probes may be used to amplify corresponding coding sequences from a chosen organism by PCR. This technique may be used to isolate other possible nematode resistance coding sequences from a desired organism or as a diagnostic assay to determine the presence of the nematode resistance coding sequence in an organism.

Such techniques include hybridization screening of plated DNA libraries (either plaques or colonies; see, e.g., Innis et al., eds. (1990) PCR Protocols. A Guide to Methods and Applications (Academic Press, New York)).

The isolated DNA sequences further comprise DNA sequences isolated from other plants by hybridization with partial sequences obtained from maize and soybean. Conditions that will permit other DNA sequences to hybridize to the DNA sequences disclosed herein can be determined in accordance with techniques generally known in the art. For example, hybridization of such sequences may be carried out under conditions of reduced stringency, medium stringency, or high stringency conditions (e.g., conditions represented by a wash stringency of 35-40% Formamide with 5×DenhAardt's solution, 0.5% SDS, and 1×SSPE at 37° C., conditions represented by a wash stringency of 40-45% Formamide with 5×Denhardt's solution, 0.5% SDS, and 1×SSPE at 42° C.; and conditions represented by a wash stringency of 50% Formamide with 5×Denhardt's solution, 0.5% SDS, and 1×SSPE at 42° C., respectively. See Sambrook et al. (1989) Molecular Cloning. A Laboratory Manual (2d ed., Cold Spring Harbor Laboratory Press, Plainview, N.Y.). In general, sequences that confer nematode resistance and hybridize to the DNA sequences disclosed herein will be at least 70-75% homologous, 80-85% homologous, and even 90-95% homologous or more.

The following terms are used to describe the sequence relationships between two or more nucleic acids or polynucleotides: (a) “reference sequence”, (b) “comparison window”, (c) “sequence identity”, (d) “percentage of sequence identity”, and (e) “substantial identity”.

(a) As used herein, “reference sequence” is a defined sequence used as a basis for sequence comparison. A reference sequence may be a subset of or the entire specified sequence; for example, as a segment of a full-length cDNA or gene sequence, or the complete cDNA or gene sequence.

(b) As used herein, “comparison window” makes reference to a contiguous and specified segment of a polynucleotide sequence, wherein the polynucleotide sequence in the comparison window may comprise additions or deletions (i.e., gaps) compared to the reference sequence (which does not comprise additions or deletions) for optimal alignment of the two sequences. Generally, the comparison window is at least 20 contiguous nucleotides in length, and optionally can be 30, 40, 50, 100, or more contiguous nucleotides in length. Those of skill in the art understand that to avoid a high similarity to a reference sequence due to inclusion of gaps in the polynucleotide sequence a gap penalty is typically introduced and is subtracted from the number of matches.

Methods of alignment of sequences for comparison are well-known in the art. Optimal alignment of sequences for comparison may be conducted by the local homology algorithm of Smith and Waterman (1981) Adv. Appl. Math. 2:482; by the homology alignment algorithm of Needleman and Wunsch (1970) J. Mol. Biol. 48:443; by the search for similarity method of Pearson and Lipman (1988) Proc. Natl. Acad. Sci. 85:2444; by computerized implementations of these algorithms, including, but not limited to: CLUSTAL in the PC/Gene program by Intelligenetics (Mountain View, Calif.), GAP, BESTFIT, BLAST, FASTA, and TFASTA in the Wisconsin Genetics Software Package, Genetics Computer Group (GCG) (575 Science Drive, Madison, Wis.); the CLUSTAL program is well described by Higgins and Sharp (1988) Gene 73:237-244; Higgins and Sharp (1989); CABIOS 5:151-153; Corpet et al. (1988) Nucleic Acids Res. 16:10881-90; Huang et al. (1992) Computer Applications in the Biosciences 8:155-65; and Person et al. (1994) Meth. of Mol. Biol. 24:307-331; preferred computer alignment methods also include the BLASTP, BLASTN, and BLASTX algorithms. See Altschul et al. (1990) J. Mol. Biol. 215:403-410. Alignment is also often performed by visual inspection and manual alignment.

(c) As used herein, “sequence identity” or “identity” in the context of two nucleic acid or polypeptide sequences includes reference to the residues in the two sequences that are the same when aligned for maxim urn correspondence over a specified comparison window. When percentage of sequence identity is used in reference to proteins, it is recognized that residue positions that are not identical often differ by conservative amino acid substitutions, where amino acid residues are substituted for other amino acid residues with similar chemical properties (e.g., charge or hydrophobicity) and therefore do not substantially change the functional properties of the molecule. Where sequences differ in conservative substitutions, the percentage of sequence identity may be adjusted upward to correct for the conservative nature of the substitution. Sequences that differ by such conservative substitutions are said to have “sequence similarity” or “similarity.” Means for making this adjustment are well-known to those of skill in the art. Typically this involves scoring a conservative substitution as a partial rather than a full mismatch, thereby increasing the percentage of sequence identity. Thus, for example, where an identical amino acid is given a score of 1 and a non-conservative substitution is given a .core of zero, a conservative substitution is given a score between zero and 1. The scoring of conservative substitutions is calculated, e.g., as implemented in the program PC/GENE (Intelligenetics, Mountain View, Calif.).

(d) As used herein, “percentage of sequence identity” means the value determined by comparing two optimally aligned sequences over a comparison window, wherein the portion of the polynucleotide sequence in the comparison window may comprise additions or deletions (i.e., gaps) is compared to the reference sequence (which does not comprise additions or deletions) for optimal alignment of the two sequences. The percentage is calculated by determining the number of positions at which the identical nucleic acid base or amino acid residue occurs in both sequences to yield the number of matched positions, dividing the number of matched positions by the total number of positions in the window of comparison and multiplying the result by 100 to yield the percentage of sequence identity.

(e) (i) The term “substantial identity” of polynucleotide sequences means that a polynucleotide comprises a sequence that has at least 70% sequence identity, preferably at least 80%, more preferably at least 90% and most preferably at least 95%, compared to a reference sequence using one of the alignment programs described using standard parameters. One of skill in the art will recognize that these values can be appropriately adjusted to determine corresponding identity of proteins encoded by two nucleotide sequences by taking into account codon degeneracy, amino acid similarity, reading frame positioning, and the like. Substantial identity of amino acid sequences for these purposes normally means sequence identity of at least 60%, more preferably at least 70%, 80%, 90%, and most preferably at least 95%.

Another indication that nucleotide sequences are substantially identical is if two molecules hybridize to each other under stringent conditions. Generally, stringent temperature conditions are selected to be about 5° C. to about 2° C. lower than the melting point (T_(m)) for the specific sequence at a defined ionic strength and pH. The denaturation or melting of DNA occurs over a narrow temperature range and represents the disruption of the double helix into its complementary single strands. The process usually is characterized by the temperature of the midpoint of transition, T_(m), which is sometimes described as the melting temperature. Formulas are available in the art for the determination of melting temperatures. Typically, stringent wash conditions are those in which the salt concentration is about 0.02 molar at pH 7 and the temperature is at 50, 55, or 60° C. However, nucleic acids that do not hybridize to each other under stringent conditions are still substantially identical if the polypeptides that they encode are substantially identical. This may occur, for example, when a copy of a nucleic acid is created using the maximum codon degeneracy permitted by the genetic code. One indication that two nucleic acid sequences are substantially identical is that the polypeptide that the first nucleic acid encodes is immunologically cross reactive with the polypeptide encoded by the second nucleic acid.

(e) (ii) The terms “substantial identity” in the context of a peptide indicates that a peptide comprises a sequence with at least 70% sequence identity to a reference sequence, preferably 80%, more preferably 85%, most preferably at least 90% or 95% sequence identity to the reference sequence over a specified comparison window. Preferably, optimal alignment is conducted using the homology alignment algorithm of Needleman and Wunsch (1970) J. Mol. Biol. 48:443. An indication that two peptide sequences are substantially identical is that one peptide is immunologically reactive with antibodies raised against the second peptide. Thus, a peptide is substantially identical to a second peptide, for example, where the two peptides differ only by a conservative substitution. Polypeptides that are “substantially similar” share sequences as noted above except that residue positions that are not identical may differ by conservative amino acid changes.

The present invention also encompasses the proteins and peptides encoded by the nucleotide sequences of this invention. It is recognized that the proteins of the invention may be oligomeric and will vary in molecular weight, component peptides, activity, and in other characteristics. The proteins of the invention can be used to protect plants against nematodes. Such methods are described in more detail below.

Fragments and variants of the disclosed nucleotide sequences and proteins encoded thereby are also encompassed by the present invention. By “fragment” is intended a portion of the nucleotide sequence or a portion of the amino acid sequence and hence protein encoded thereby. Fragments of a nucleotide sequence may encode protein fragments that retain the biological activity of the native protein and hence confer resistance to nematodes. Alternatively, fragments of a nucleotide sequence that are useful as hybridization probes generally do not encode fragment proteins retaining biological activity. Thus, fragments of a nucleotide sequence may range from at least about 20 nucleotides, about 50 nucleotides, about 100 nucleotides, and up to the entire nucleotide sequence encoding the proteins of the invention.

By “variants” is intended substantially similar sequences. For nucleotide sequences, conservative variants include those sequences that, because of the degeneracy of the genetic code, encode the amino acid sequence of one of the proteins conferring resistance to nematodes. Generally, nucleotide sequence variants of the invention will have at least 70%, generally, 80%, preferably up to 90% sequence identity to its respective native nucleotide sequence.

By “variant” protein is intended a protein derived from the native protein by deletion (so-called truncation) or addition of one or more amino acids to the N-terminal and/or C-terminal end of the native protein; deletion or addition of one or more amino acids at one or more sites in the native protein; or substitution of one or more amino acids at one or more sites in the native protein. Such variants may result from, for example, genetic polymorphism or from human manipulation. Methods for such manipulations are generally known in the art.

Thus, the proteins of the invention may be altered in various ways including amino acid substitutions, deletions, truncations, and insertions. Methods for such manipulations are generally known in the art. For example, amino acid sequence variants of the proteins can be prepared by mutations in the DNA. Methods for mutagenesis and nucleotide sequence alterations arc well known in the art. See, for example, Kunkel (1985) Proc. Natl. Acad Sci. USA 82:488-492; Kunkel et al. (1987) Methods in Enzymol. 154:367-382; U.S. Pat. No. 4,873,192; Walker and Gaastra, eds. (1983) Techniques in Molecular Biology (MacMillan Publishing Company, New York) and the references cited therein. Thus, the genes and nucleotide sequences of the invention include both the naturally occurring sequences as well as mutant forms. Likewise, the proteins of the invention encompass both naturally occurring proteins as well as variations, fragments, and modified forms thereof. Such variants will continue to possess the desired activity of conferring resistance to nematodes. Obviously, the mutations that will be made in the DNA encoding the variant must not place the sequence out of reading frame and preferably will not create sequences deleterious to expression of the gene product. See, EP Patent Application Publication No. 75,444.

The nematode resistance genes of the invention can be optimized for enhanced expression in plants of interest. See, for example, EPA0359472; EPA0385962; WO91/16432; Perlak et al. (1991)Proc. Natl. Acad. Sci. USA 88:3324-3328; and Murray et al. (1989) Nucleic Acids Res. 17:477-498. In this manner, the genes can be synthesized utilizing plant-preferred codons. See, for example, Murray et al. (1989) Nucleic Acids Res. 17:477-498, the disclosure of which is incorporated herein by reference. In this manner, synthetic genes can also be made based on the distribution of codons a particular host uses for a particular amino acid. Thus, the nucleotide sequences can be optimized for expression in any plant. It is recognized that all or any part of the gene sequence may be optimized or synthetic. That is, synthetic or partially optimized sequences may also be used.

The present invention also relates to a recombinant DNA transformation construct comprising the isolated DNA sequences involved in nematode resistance in plants. The recombinant DNA transformation construct can be introduced into plant cells, protoplasts, calli, tissues, or whole plants to confer nematode-resistance properties in plants.

The sequences of the invention can be constructed in expression cassettes for expression in a plant. Such expression cassettes will comprise a transcriptional initiation region linked to the gene encoding the gene of interest. Such an expression cassette is provided with a plurality of restriction sites for insertion of the gene of interest behind the regulatory control of a designated promoter. The expression cassette may additionally contain selectable marker genes suitable for the particular host organism.

The transcriptional initiation region, the promoter, may be native or analogous or foreign or heterologous to the host. Additionally, the promoter may be the natural sequence or alternatively a synthetic sequence. By foreign is intended that the transcriptional initiation region is not found in the wild-type host into which the transcriptional initiation region is introduced. As used herein a chimeric gene comprises a coding sequence operably linked to a transcription initiation region which is heterologous to the coding sequence. While any promoter or promoter element capable of driving expression of a coding sequence can be utilized, of particular interest for expression in plants are root promoters (Bevan et al. (1993) in Gene Conservation and Exploitation: Proceedings of the 20th Stadler Genetics Symposium, ed. Gustafson et al. (Plenum Press, New York) pp. 109-129; Brears et al. (1991) Plant J. 1:235-244; Lorenz et al. (1993) Plant J. 4:545-554; U.S. Pat. Nos. 5,459,252;5,608,149;5,599,670); pith promoter (U.S. Pat. Nos. 5,466,785; 5,451,514;5,391,725); or other tissue specific and constitutive promoters (see, for example, U.S. Pat. Nos. 5,608,149;5,608,144;5,604,121;5,569,597;5,466,785; 5,399,680;5,268,463;5,608,142), herein incorporated by reference.

The transcriptional cassette will include in the 5′-to-3′ direction of transcription, transcriptional and translational initiation regions, a DNA sequence of interest, and transcriptional and translational termination regions functional in plants. The termination region may be native with the transcriptional initiation region, may be native with the DNA sequence of interest, or may be derived from another source. Convenient termination regions are available from the Ti-plasmid of A. tumefaciens, such as the octopine synthase and nopaline synthase termination regions. See also, Guerineau et al. (1991) Mol. Gen. Genet. 262:141-144; Proudfoot (1991) Cell 64:671-674; Sanfacon et al. (1991) Genes Dev. 5:141-149; Mogen et al. (1990) Plant Cell 2:1261-1272; Munroe et al. (1990) Gene 91:151-158; Ballas et al. (1989) Nucleic Acids Res. 17:7891-7903; Joshi et al. (1987) Nucleic Acid Res. 15:9627-9639.

Methodologies for the construction of plant transformation constructs are described in the art. The construct may include any necessary regulatory elements such as promoters, terminators (Guerineau et al. (1991) Mol. Gen. Genet. 226:141-144; Proudfoot (1991) Cell 64:671-674; Sanfacon et al. (1991) Genes Dev. 5:141-149; Mogen et al. (1990) Plant Cell 2:1261-1272; Munroe et al. (1990) Gene 91:151-158; Ballas et al. (1989) Nucleic Acids Res. 17:7891-7903; Joshi et al. (1987) Nucleic Acid Res. 15:9627-9639); plant translational consensus sequences (Joshi, C.P. (1987) Nucleic Acids Research 15:6643-6653), enhancers, introns (Luehrsen and Walbot (1991) Mol. Gen. Genet. 225:81-93) and the like. operably linked to the nucleotide sequence. It may be beneficial to include 5′ leader sequences in the transformation construct. Such leader sequences can act to enhance translation. See, for example, Elroy-Stein et al. (1989) PNAS USA 86:6126-6130; Allison et al. (1986); Macejak and Sarnow (1991) Nature 353:90-94; Jobling and Gehrke (1987) Nature 325:622-625; Gallie et al. (1989) Molecular Biology of RNA, pp. 237-256; Lommel et al. (1991) Virology 81:382-385; and Della-Cioppa et al. (1987) Plant Physiol. 84:965-968.

Transcriptional and translational regulatory signals include but are not limited to promoters, transcriptional initiation start sites, operators, activators, enhancers, other regulatory elements, ribosomal binding sites, an initiation codon, termination signals, and the like. See, for example, U.S. Pat. No. 5,039,523; U.S. Pat. No. 4,853,331; EPO 0480762A2; Sambrook et al. (1989) Molecular Cloning: A Laboratory Manual (2d ed., Cold Spring Harbor Laboratory Press, Plainview, New York); Davis et al., eds. (1980) Advanced Bacterial Gene tics (2d ed., Cold Spring Harbor Laboratory, Cold Spring Harbor, N.Y.); and the references cited therein.

For the expression of the proteins encoded by the isolated DNA sequences of the present invention, a promoter capable of facilitating gene transcription in plant cells must be operably linked to the nematode resistance gene sequence. A variety of suitable promoters are generally known in the art. Both constitutive promoter and tissue-specific promoters can be used. A constitutive promoter is a promoter that can initiate RNA transcription in any tissue or cell in a plant, while tissue-specific promoters can do so only in specific tissues. Suitable promoters are known in the art and include 35S and 19S promoter of CaMV, Agrobacterium NOS (nopaline synthase) gene promoter, and the Agrobacterium mannopine synthase gene promoter. For tissue specific expression, the isolated DNA sequences of the invention conferring nematode resistance can be operably linked to tissue specific promoters.

In addition, a marker gene for identifying and selecting transformed cells, tissues, or plants may be included in the transformation construct. By marker gene is intended to be either reporter genes or selectable marker genes.

Reporter genes are generally known in the art. The reporter gene used should be exogenous and not expressed endogenously. Ideally the reporter gene will exhibit low background activity and should not interfere with plant biochemical and physiological activities. The products expressed by the reporter gene should be stable and readily detectable. It is important that the reporter gene expression should be able to be assayed by a non-destructive, quantitative, sensitive, easy to perform and inexpensive method.

Examples of suitable reporter genes known in the art can be found in, for example, Jefferson et al. (1991) in Plant Molecular Biology Manual, ed. Gelvin et al. (Kluwer Academic Publishers), pp. 1-33; (DeWet et al. (1987) Mol. Cell. Biol. 7:725-737; Goff et al. (1990) EMBO J 9:2517-2522; Kain et al. (1995) BioTechniques 19:650-655; Chiu et al. (1996) Current Biology 6:325-330.

Selectable marker genes for selection of transformed cells or tissues can include genes that confer antibiotic resistance or resistance to herbicides. Examples of suitable selectable marker genes include, but are not limited to, genes encoding resistance to chloramphenicol (Herrera Estrella et al. (1983) EMBO J. 2:987-992; methotrexate (Herrera Estrella et al. (1983) Nature 303:209-213; Meijer et al. (1991) Plant Mol. Biol. 16:807-820); hygromycin Waldron et al. (1985) Plant Mol. Biol. 5:103-108; Zhijian et al. (1995) Plant Science 108:219-227); streptomycin (Jones et al. (1987) Mol. Gen. Genet. 210:86-91; spectinomycin (Bretagne-Sagnard et al. (1996) Transgenic Res. 5:131-137); bleomycin (Hille et al. (1990) Plant Mol. Biol. 7:171-176); sulfonamide (Guerineau et al. (1990) Plant Mol. Biol. 15:127-136); bromoxynil (Stalker et al .(1988) Science 242:419-423); glyphosate (Shaw et al. (1986) Science 233:478-481); phosphinothricin (DeBlock et al. (1987) EMBO J. 6:2513-2518); kanomycin, and the like.

It is further recognized that the components of the transformation construct may be modified to increase expression. For example, truncated sequences, nucleotide substitutions or other modifications may be employed. See, for example, Perlak et al. (1991) Proc. Natl. Acad. Sci. USA 88:3324-3328; Murray et al. (1989) Nucleic Acids Res. 17:477-498; and WO91/16432.

In preparing the transformation construct, the various DNA fragments may be manipulated, so as to provide for the DNA sequences in the proper orientation and, as appropriate in the proper reading frame. Toward this end, adapters or linkers may be employed to join the DNA fragments or other manipulations may be involved to provide for convenient restriction sites, removal of superfluous DNA, removal of restriction sites, or the like. For this purpose, in vitro mutagenesis, primer repair, restriction, annealing, resection, ligation, PCR, or the like may be employed, where insertions, deletions, or substitutions, e.g., transitions and transversions, may be involved.

The present invention also relates to the introduction of the transformation constructs into plant protoplasts, calli, tissues, or organ explants and the regeneration of transformed plants expressing the nematode resistance gene. The compositions of the present invention can be used to transform any plant. In this mainer, genetically modified plants, plant cells, plant tissue, seed, and the like can be obtained. Transformation protocols may vary depending on the type of plant or plant cell, i.e., monocot or dicot, targeted for transformation. Suitable methods of transforming plant cells include microinjection (Crossway et al. (1986) Biotechniques 7:320-334), electroporation (Riggs et al. (1986) Proc. Natl. Acad. Sci. USA 83:5602-5606); Agrobacterium-mediated transformation (Hinchee et al. (1988) Biotechnology 6:915-921); direct gene transfer (Paszkowski et al. (1984) EMBO J 3:2717-2722); and ballistic particle bombardment (see, for example, Sanford et al., U.S. Pat. No. 4,945,050; Tomes et al. (1995) in Plant Cell, Tissue and Organ Culture: Fundamental Methods, ed. Gamborg and Phillips (Springer-Verlag, Berlin); and McCabe et al. (1988) Biotechnology 6:923-926). Also see Weissinger et al. (1988) Ann. Rev. Genet. 22:421-477; Sanford et al. (1987) Particulate Science and Technology 5:27-37 (onion); Christou et al. (1988) Plant Physiol. 87:671-674 (soybean); McCabe et al. (1988) Biotechnology 6:923-926 (soybean); Finer and McMullen (1991) In Vitro Cell Dev. Biol. 27P: 175-182 (soybean); Singh et al. (1998) Theor. Appl. Genet. 96:319-324 (soybean); Datta et al. (1990) Biotechnology 8:736-740 (rice); Klein et al. (1988) Proc. Natl. Acad. Sci. USA 85:4305-4309 (maize); Klein et al. (1988) Biotechnology 6:559-563 (maize); Klein et al. (1988) Plant Physiol. 91:440-444 (maize); Fromm et al. (1990) Biotechnology 8:833-839; and Tomes et al. (1995) in Plant Cell, Tissue, and Organ Culture. Fundamental Methods, ed. Gamborg and Phillips (Springer-Verlag, Berlin) (maize); Hooydaas-Van Slogteren and Hooykaas (1984) Nature (London) 311:763-764; Bytebier et al. (1987) Proc. Natl. Acad. Sci. USA 84:5345-5349 (Liliaceae); De Wet et al. (1985) in The Experimental Manipulation of Ovule Tissues, (G.H.P. Chapman et al., Longman, N.Y. eds. pp. 197-209) (pollen); Kaeppler et al. (1990) Plant Cell Reports 9:415-418; Kaeppler et al. (1992) Theor. AppL. Genet. 84:560-566 (whisker-mediated transformation); DeHalluin et al. (1992) Plant Cell 4:14-1505 (electroporation); Li et al. (1993) Plant Cell Reports 12:250-255, and Christou and Ford (1995) Annals of Botany 75:407-413 (rice); Osjoda et al. (1996) Nature Biotechnology 14:745-750 (maize via Agrobacterium tumefaciens); all of which are herein incorporated by reference.

Plant tissues suitable for transformation include but are not limited to leaf tissues, root tissues, shoots, meristems, and protoplasts. For soybean it is often preferred to utilize explants of cotyledons.

For example, the Agrobacterium tumefaciens strain A208 is known to be highly virulent on soybean and to give rise to a higher rate of transformation. See Byrne et al. (1987) Plant Cell Tissue and Organ Culture 8:3-15. The transformation of soybean protoplasts by co-culturing them with Agrobacteriun tumefaciens or Agrobacterium rhizogenes has been known and is hereby incorporated by reference. See Facciotti et al. (1985) Biotechnology (New York) 3:241. Tissue explants may be inoculated with the bacterium for transformation. For example, U.S. Pat. No. 5,569,834 issued to Hinchee et al. discloses a method for soybean transformation and regeneration by inoculating a cotyledon explant that is torn apart at the cotyledonary node.

Alternatively, plants can also be transformed successfully by the biolistic technique, which involves using high velocity microprojectiles carrying microparticles containing the transformation construct to propel the microparticles into a plant cell, protoplast, or tissue. The high velocity microprojectile penetrates the outer cell surface without destroying the cell and injects the microparticles into the cells. The transformation construct in the microparticles is thereafter released and incorporated into the cell genome. This technique is also known as particle bombardment and is disclosed in U.S. Pat. Nos. 4,945,050, 5,036,006, and 5,100,792, which are hereby incorporated by reference. The key advantage of this technique is that it works on virtually any plant tissue. An example of successful transformation of soybean using this particle bombardment technique is demonstrated in McCabe et al. (1988) Biotechnology 6:923-926.

In yet another method of transformation, protoplasts are transfected directly with expression vector DNA that contains the nematode-resistance gene by electroporation or DNA-protoplast co-precipitation in accordance with procedures generally known in the art. See Christou et al. (1987) Proc. Natl. Acad. Sci. USA 84:3962-3966; Lin et al. (1987) Plant Physiol. 84:856-861.

Once the transformation construct containing the isolated DNA sequences of this invention has been delivered, protoplasts, cells, or tissues expressing the protein encoded by the isolated nematode resistance gene are selected. Selection can be based on the selectable marker that is incorporated in the transformation construct or by culturing the protoplasts, cells, or tissues in media containing one of the antibiotics or herbicides. Alternatively, nematode-resistance may be directly selected by inoculating nematodes into the transformed protoplasts, cells, or tissues. Both methods of selection are generally known in the art.

A further aspect of the present invention relates te the regeneration of transgenic plants that express nematode resistance genes )f the invention. The cells that have been transformed and selected for expression of the sequence of this invention may be grown into plants in accordance with conventional ways. See, for example, McCormick et al. (1986) Plant Cell Reports 5:81-84. These plants may then be grown, and either pollinated with the same transformed strain or different strains, the resulting hybrid having the desired genetic traits necessary for nematoderesistance.

For example, in soybean, transgenic soybean regeneration has been successful from tissues such as nodal axillary buds transformed with electroporation-mediated gene transfer technique (Chowrira et al. (1996) Mol. Biotechnol. 5:85-96); somatic embryos transformed using microprojectile bombardment (Stewart el al. (1996) Plant Physiol. 112:121-129); and cotyledon explants that are torn apart at the cotyledonary node and are transformed by Agrobacterium inoculation (U.S. Pat. No. 5,569,834 issued to Hinchee et al.). Other methods for regenerating soybean plants are disclosed in U.S. Pat. No. 4,684,612 issued to Hemphill et al., and U.S. Pat. No. 4,992,375 issued to Wright, which are hereby incorporated by reference.

The sequences of the invention are generally introduced into plants wherein the plant in its native state does not contain the DNA sequences. However, it is recognized that in some plants the gene may occur but does not confer resistance because of aberrant expression, a mutation in the sequence, a nonfunctional protein, and the like. It will be beneficial to transform such plants with the sequences of the invention.

Using cells and tissues of the present invention that are resistant to nematodes helps to obviate the problem of nematode infection of the host cells and tissues in the culture. In addition, the cells and tissues according to the present invention can also be valuable in the elucidation of the mechanism underlying the plant resistance to pathogens. Such plants include maize, oats, wheat, rice, barley, sorghum, alfalfa, tobacco, cotton, sugar beet, sunflower, carrot, canola, tomato, potato, oilseed rape, cabbage, pepper, lettuce, brassicas, tobacco, and soybean.

It is recognized that resistance to nematodes may be multigenic and quantitative in certain plants. Thus, the sequences disclosed herein may be useful alone or in combination with other sequences. Breeding programs have produced many genotypes that have varying numbers of the genes responsible for nematode resistance.

Thus, the isolated DNA sequences of the invention are preferably used to transform plants expressing one or more other nematode resistance genes. Such plants may be naturally occurring, produced by breeding programs, or produced by transformation with other nematode resistance genes. The result of the transformation with the isolated nematode resistance gene of this invention improves the plants capacity for nematode resistance.

Cotransformation may be conducted to introduce the DNA sequences of this invention into plants together with one or more other nematode resistance genes. In the transformation construct, the other known nematode resistance genes may be contained on the same plasmid as the DNA sequence of this invention or may be contained on a separate plasmid or DNA molecule. The methods for making transformation constructs having the other known nematode resistance gene with or without a DNA sequence isolated in this invention are similar to the methods described above and should be apparent to a person skilled in the art.

Several methods of cotransformation of plants have been developed. Cotransformation is easily accomplished by DNA mediated processes, such as the coprecipitation method, biolistic method, and electroporation. Each of these methods is adequately suited for the introduction of the DNA sequences of this invention and other nematode resistance genes, on the same or separate plasmids, into the plant cells. Alternatively, Agrobacterium tumefaciens-mediated cotransformation techniques can be employed. Examples of such techniques can be found in, for example, Depicker et al. (1985) Mol. Gen. Genet. 201:477-484; McKnight et al. (1987) Plant Mol. Biol. 8:439-445; De Block et al. (1991) Theor. Appl. Genet. 82:257-263; de Framond et al. (1986) Mol. Gen. Genet. 202:125-131; and Komari et al. (1996) The Plant Journal 10:165-174. In an alternative method, multiple transgenes may be brought together by breeding of separately transformed parent plants.

The following examples are offered by way of illustration and not by way of limitation.

EXAMPLES Example 1

Incorporation of DNA Sequences Conferring Nematode Resistance into Expression Vectors

Genomic DNA sequences spanning the full length coding regions of gene fragments conferring nematode-resistance to maize and soybean were isolated and cloned. These sequences are set forth in SEQ ID NOs: 1 and 3 (maize) and 5 and 7 (soybean). Plasmids containing these sequences have been deposited with American Type Culture Collection (ATCC) on Oct. 15, 1997, and on Fed. 4, 1998 and are assigned Accession Numbers 209366, 209365, 209614, 209363, and 209364.

Gene fragments are cloned into a plasmid vector, such as that shown in FIG. 1, in the sense orientation so that they are under the transcriptional control of a constitutive promoter. The transformation construct is then available for introduction into soybean cells by bombardment methods as described in Example 2.

Example 2

Transformation of Soybean Cells and Regeneration of Transgenic Plants Having Improved Nematode Resistance

Initiation and Maintenance of Embryogenic Suspension Cultures

Embryogenic suspension cultures of soybean (Grlycine max Merrill) are initiated and maintained in a 10A40N medium supplemented with 5 mM asparagine as described previously (Finer and Nagasowa (1988) Plant Cell Tissue Org. Cult. 15:125-136). For subculture, two clumps of embryogenic tissue, 4 mm in diameter, are transferred to 35 ml of 10A40N medium in a 125-ml delong flask. High quality embryogenic material is selectively subcultured monthly at this low inoculum density.

Preparation of DNA and Tungsten Pellets

Plasmid DNA from Example 1 is precipitated onto 1.1 μm (average diameter) tungsten pellets using a CaCl₂ precipitation procedure (Finer and McMullen (1990) Plant Cell Rep. 8:586-589). The pellet mixture containing the precipitated DNA is gently resuspended after precipitation, and 2 μl is removed for bombardment.

Preparation of Plant Tissue for Bombardment

Approximately 1 g of embryogenic suspension culture tissue (taken 3 weeks after subculture) is transferred to a 3.5-cm-diameter petri dish. The tissue is centered in the dish, the excess liquid is removed with a pipette, and a sterile 500 μm pore size nylon screen (Tetko Inc., Elmsford, N.Y.) is placed over the embryonic tissue. Open petri dishes are placed in a laminar-flow hood for 10 to 15 minutes to evaporate residual liquid medium from the tissue. The 3.5-cm-diameter petri dish is placed in the center of a 9-cm-diameter petri dish immediately before bombardment. Bombardments are performed using a DuPont Biolistics Particle Delivery System (model BPG). Each sample of embryogenic soybean tissue is bombarded once.

Selection for Transgenic Clones

Bombarded tissues are resuspended in the 10A40N maintenance medium. One to two weeks after bombardment the clumps of embryogenic tissue are resuspended in fresh 10A40N medium containing a selection agent, such as kanomycin or hygromycin. The selection agent is filter-sterilized before addition to liquid media. The medium containing a selection agent is replaced with fresh antibiotic-containing medium weekly for 3 additional weeks.

Six to eight weeks after the initial bombardment, brown clumps of tissue that contain yellow-green lobes of embryogenic tissue are removed and separately subcultured in 10A40N medium containing selection agent. After 3 to 4 months of maintenance in this medium, proliferating embryogenic tissues are maintained by standard subculture in 10A40N without added antibiotic. Embryogenic tissues are periodically removed from 10A40N medium containing selection agent and 10A40N for embryo development and Southern hybridization analyses.

Embryo Development and Germination

For embryo development, clumps of kanamycin-resistant embryogenic tissues are placed at 23° C. on the embryo development medium, which contains MS salts (Murashige and Skoog (1962) Physiol. Plant 15:474-497), B5 vitamins (Gamborg et al. (1968) Exp. Cell. Res. 50:151-158), 6% maltose, and 0.2% gelrite (pH 5.7). One month after plating, the developing embryos are cultured as individual embryos, 25 per 9-cm-diameter petri dish in fresh embryo development medium. After an additional 4 weeks, the mature embryos are placed in dry petri dishes for 2 to 3 days. After the desiccation treatment, the embryos are transferred to a medium containing MS salts, B5 vitamins, 3% sucrose, and 0.2% Gelrite (pH 5.7). After root and shoot elongation, plantlets are transferred to pots containing a 1:1:1 mixture of vermiculite, topsoil, and peat, and maintained under high humidity. Plantlets are gradually exposed to ambient humidity over a 2-week period and placed in the greenhouse, where they are grown to maturity and monitored for expression of the nematode resistance gene.

DNA Extraction and Southern Hybridization Analysis

DNA is extracted from embryogenic tissue and leaves using the CTAB procedure (Saghai-Maroof et al. (1984) Proc. Natl. Acad. Sci. USA 81:8014-8018). Digested DNAs are electrophoresed on a 0.8% agarose gel. The DNA in the gels is treated with 0.2 N HCI, twice for 15 minutes, followed with 0.5 M NaOH/0.1 M 1.5 M NaCl, twice for 30 minutes, and finally 1 M NH₄C₂H₃O₂/0.1 M NaOH, for 40 minutes. The DNA is transferred (Vollrath et al. (1988) Proc. Natl. Acad. Sci. USA 85:6027-6031) to nylon membranes (Zetaprobe-BioRad, Richmond, Calif.) overnight by capillary transfer using 1 M NH₄C₂H₃O₂/0.1 M NaOH. The membranes are baked at 80° C. for 2 hours under vacuum and then prehybridized for 4 to 6 hours at 65° C. in 50 mM Tris pH 8.0, 5 ×standard saline citrate (SSC), 2×Denhardt's, 10 mM Na₂EDTA, 0.2% sodium dodecyl sulfate (SDS), and 62.5 μg/ml salmon sperm DNA.

All publications and patent applications mentioned in the specification are indicative of the level of those skilled in the art to which this invention pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.

Although the foregoing invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it will be obvious that certain changes and modifications may be practiced within the scope of the appended claims.

10 1347 base pairs nucleic acid single linear cDNA Zea mays P12217 CDS 146..994 1 CCACGCGTCC GCGGACGCGT GGGTGCCCGG GAGCGCCGCC GCGGTCGTGT GCCAGGTCAG 60 CGAGGCCAGC CTGCTCCCGC GCCTCGCCGC GTGGGACAAG TCCGAGACGC TCGCGGCCAA 120 GATCATGTAC GCCATCGAGA GCCAG ATG CAG GGC TGC GCC TTC ACG CTC GGA 172 Met Gln Gly Cys Ala Phe Thr Leu Gly 1 5 CTC GGC GAG CCC AAC CTC GCC GGC AAG CCC GTG CTC GAG TAC GAC CGC 220 Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro Val Leu Glu Tyr Asp Arg 10 15 20 25 GTC GTG CGC CCG CAC GAG CTG CAC GCG CTC AAG CCC AAG CCA GCG CCG 268 Val Val Arg Pro His Glu Leu His Ala Leu Lys Pro Lys Pro Ala Pro 30 35 40 GAG CCC AAG TCT GGG TAC CTC AAC AGG GAG AAC GAG ACG CTG TTC ACC 316 Glu Pro Lys Ser Gly Tyr Leu Asn Arg Glu Asn Glu Thr Leu Phe Thr 45 50 55 ATG TAC CAG ATA CTC GAA TCG TGG CTG CGC GCC GCG TCG CAA CTC CTC 364 Met Tyr Gln Ile Leu Glu Ser Trp Leu Arg Ala Ala Ser Gln Leu Leu 60 65 70 GCC CGC CTC AAC GAA CGG ATC GAA GCC AAG AAC TGG GAA GCG GCG GCT 412 Ala Arg Leu Asn Glu Arg Ile Glu Ala Lys Asn Trp Glu Ala Ala Ala 75 80 85 GCC GAC TGC TGG ATC CTG GAG CGC GTG TGG AAG CTG CTC GCC GAC GTC 460 Ala Asp Cys Trp Ile Leu Glu Arg Val Trp Lys Leu Leu Ala Asp Val 90 95 100 105 GAG GAC CTC CAC CTG CTG ATG GAC CCG GAC GAC TTC CTG CGG CTC AAG 508 Glu Asp Leu His Leu Leu Met Asp Pro Asp Asp Phe Leu Arg Leu Lys 110 115 120 GGC CAG CTC GCT GTA CGA GCG GCT CCA TGG TCT GAC GCG TCG TTC TGT 556 Gly Gln Leu Ala Val Arg Ala Ala Pro Trp Ser Asp Ala Ser Phe Cys 125 130 135 TTC CGG TCC AGG GCG CTC CTG CAC GTC GCT AAC ACC ACT AGG GAC CTC 604 Phe Arg Ser Arg Ala Leu Leu His Val Ala Asn Thr Thr Arg Asp Leu 140 145 150 AAG AAG CGT GTG CCC TGG GTG CTC GGT GTC GAG GTG GAC CCC AAC GGC 652 Lys Lys Arg Val Pro Trp Val Leu Gly Val Glu Val Asp Pro Asn Gly 155 160 165 GGC CCG CGG GTG CAG GAG GCA GCC ATG ATG CTG TAC CAC AGC CGT AGG 700 Gly Pro Arg Val Gln Glu Ala Ala Met Met Leu Tyr His Ser Arg Arg 170 175 180 185 CGC GGC GAG GGC GAG GAG GCG GGC AAG GTG GAG CTG CTC CAG GCC TTC 748 Arg Gly Glu Gly Glu Glu Ala Gly Lys Val Glu Leu Leu Gln Ala Phe 190 195 200 CAA GCA GTG GAG GTG GCC GTG AGA GGA TTC TTC TTC GCG TAC CGG CAG 796 Gln Ala Val Glu Val Ala Val Arg Gly Phe Phe Phe Ala Tyr Arg Gln 205 210 215 CTC GTG GCG GCG GTG ATG GGC ACG GCG GAG GCG TTG GGC AAC CGG GCG 844 Leu Val Ala Ala Val Met Gly Thr Ala Glu Ala Leu Gly Asn Arg Ala 220 225 230 CTG TTC GTG CCG GCG GAG GGG ATG GAT CCA TTG GCC CAG ATG TTC CTC 892 Leu Phe Val Pro Ala Glu Gly Met Asp Pro Leu Ala Gln Met Phe Leu 235 240 245 GAG CCA CCC TAC TAC CCC AGC CTG GAT GCC GCC AAG ACG TTC CTA GCG 940 Glu Pro Pro Tyr Tyr Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Ala 250 255 260 265 GAT TAC TGG GTT CAG CAG ATG GCG GGG GCC TCT GCT CCG TCA ATA CAA 988 Asp Tyr Trp Val Gln Gln Met Ala Gly Ala Ser Ala Pro Ser Ile Gln 270 275 280 AGC TGA AACGGCGAAA TGGCGCGGCT GGATAGCGAC CGAATCGCGC AGTTTTGCAG 1044 Ser * CCTGAAGATA CTATGTATGC ATGCATCGTA ATTTCGCTGT GGCCTTGTGG TGATAGAGTG 1104 ATTCATTTCT ATAGCGATCC TGTACTAGTG TAGTACATGT AGCACTAAAT TGTCTTATTA 1164 TCGTTGTGCT TGTGCACTGC GTTGTGTTGT GTTCTACATA GAGATTGATT CAGTTAGATG 1224 CCATTTGTCA CTCTAGGCAA GTGTTTCAAT TGGGCACCGT GTATATATAG AACTTTTGTA 1284 AACACTGGTA GATGGATTCA TCAATTACAG AATGTTGATG TTGACAAAAA AAAAAAAAAA 1344 AAA 1347 282 amino acids amino acid linear protein not provided 2 Met Gln Gly Cys Ala Phe Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala 1 5 10 15 Gly Lys Pro Val Leu Glu Tyr Asp Arg Val Val Arg Pro His Glu Leu 20 25 30 His Ala Leu Lys Pro Lys Pro Ala Pro Glu Pro Lys Ser Gly Tyr Leu 35 40 45 Asn Arg Glu Asn Glu Thr Leu Phe Thr Met Tyr Gln Ile Leu Glu Ser 50 55 60 Trp Leu Arg Ala Ala Ser Gln Leu Leu Ala Arg Leu Asn Glu Arg Ile 65 70 75 80 Glu Ala Lys Asn Trp Glu Ala Ala Ala Ala Asp Cys Trp Ile Leu Glu 85 90 95 Arg Val Trp Lys Leu Leu Ala Asp Val Glu Asp Leu His Leu Leu Met 100 105 110 Asp Pro Asp Asp Phe Leu Arg Leu Lys Gly Gln Leu Ala Val Arg Ala 115 120 125 Ala Pro Trp Ser Asp Ala Ser Phe Cys Phe Arg Ser Arg Ala Leu Leu 130 135 140 His Val Ala Asn Thr Thr Arg Asp Leu Lys Lys Arg Val Pro Trp Val 145 150 155 160 Leu Gly Val Glu Val Asp Pro Asn Gly Gly Pro Arg Val Gln Glu Ala 165 170 175 Ala Met Met Leu Tyr His Ser Arg Arg Arg Gly Glu Gly Glu Glu Ala 180 185 190 Gly Lys Val Glu Leu Leu Gln Ala Phe Gln Ala Val Glu Val Ala Val 195 200 205 Arg Gly Phe Phe Phe Ala Tyr Arg Gln Leu Val Ala Ala Val Met Gly 210 215 220 Thr Ala Glu Ala Leu Gly Asn Arg Ala Leu Phe Val Pro Ala Glu Gly 225 230 235 240 Met Asp Pro Leu Ala Gln Met Phe Leu Glu Pro Pro Tyr Tyr Pro Ser 245 250 255 Leu Asp Ala Ala Lys Thr Phe Leu Ala Asp Tyr Trp Val Gln Gln Met 260 265 270 Ala Gly Ala Ser Ala Pro Ser Ile Gln Ser 275 280 1325 base pairs nucleic acid single linear cDNA Zea mays P12218 CDS 126..983 3 CCACGCGTCC GAGCGCCGCC GCGGTCGTGT GCCGGGCCAG CAAGGCCAGC CTGCTCCCGC 60 GCCTCGCCGC GTGGGAGAAG TCTGAGGCGC TCGCGGCCAG GATCACGTAC GCCGTCGAGG 120 GCCAG ATG CAG GGC TGC GCC TTC ACG CTC GGC CTC GGC GAG CCC AAC 167 Met Gln Gly Cys Ala Phe Thr Leu Gly Leu Gly Glu Pro Asn 285 290 295 CTC GCC GGC AAG CCC GTG CTC GAG TAC GAC CGC GTC GTG CGC CCG CAC 215 Leu Ala Gly Lys Pro Val Leu Glu Tyr Asp Arg Val Val Arg Pro His 300 305 310 GAG CTG CAC GCG CTG AAG CCC GAC CCT GCG CCG GAG CCC ATG TCC GGC 263 Glu Leu His Ala Leu Lys Pro Asp Pro Ala Pro Glu Pro Met Ser Gly 315 320 325 TAC CGC AAC CGG GAG CTC GAG ACT CTG TTC ACC ATG TAC CAG ATA CTC 311 Tyr Arg Asn Arg Glu Leu Glu Thr Leu Phe Thr Met Tyr Gln Ile Leu 330 335 340 345 GAG TCC TGG CTC CGC GTC GCG TCG CAG CTG CTC ACC CGC CTC GAC GAG 359 Glu Ser Trp Leu Arg Val Ala Ser Gln Leu Leu Thr Arg Leu Asp Glu 350 355 360 CGG ATC GAA GAC AAG TGC TGG GAG GCG GCG GCC GGC GAC TGC TGG ATC 407 Arg Ile Glu Asp Lys Cys Trp Glu Ala Ala Ala Gly Asp Cys Trp Ile 365 370 375 CTG GAG CGC GTG TGG AAG CTG CTC GCG GAC GTC GAG GAC CTC CAC CTG 455 Leu Glu Arg Val Trp Lys Leu Leu Ala Asp Val Glu Asp Leu His Leu 380 385 390 CTG ATG GAC CCG GAC GAG TTC CTA CGG CTC AAG AGC CAG CTC GCC GTA 503 Leu Met Asp Pro Asp Glu Phe Leu Arg Leu Lys Ser Gln Leu Ala Val 395 400 405 CGA GCG GCG CCG GGG TCT GAG TCC GCG TCC TTC TGT TTC CGG TCC ACG 551 Arg Ala Ala Pro Gly Ser Glu Ser Ala Ser Phe Cys Phe Arg Ser Thr 410 415 420 425 GCG CTC CTG CAC GTC GCT AGC GCC ACT AGG GAC CTC AAG AAG CGT GTG 599 Ala Leu Leu His Val Ala Ser Ala Thr Arg Asp Leu Lys Lys Arg Val 430 435 440 CCC TGG GTG CTC GGT GTC GAG GCG GAC CCC AGC GGC GGC CCA CGG GTG 647 Pro Trp Val Leu Gly Val Glu Ala Asp Pro Ser Gly Gly Pro Arg Val 445 450 455 CAG GAG GCG GCC ATG AAG CTG TAC CAC AGC CGT AGG CGC GGT GAG GGC 695 Gln Glu Ala Ala Met Lys Leu Tyr His Ser Arg Arg Arg Gly Glu Gly 460 465 470 GAG GAG GCA GGC AAG GTG GAC CTG CTC CAG GCC TTC CAG GCG GTG GAG 743 Glu Glu Ala Gly Lys Val Asp Leu Leu Gln Ala Phe Gln Ala Val Glu 475 480 485 GTG GCC GTG AGA GCA TTC TTC TTC GGG TAC CGG CAG CTG GTG GCG GCG 791 Val Ala Val Arg Ala Phe Phe Phe Gly Tyr Arg Gln Leu Val Ala Ala 490 495 500 505 GTG ATG GGC ACG GCG GAG GCG TCG GGC AAC CGG GCG CTG TTC GTG CCG 839 Val Met Gly Thr Ala Glu Ala Ser Gly Asn Arg Ala Leu Phe Val Pro 510 515 520 GCG GAG GAG ATG GAT CCG CTC GCC CAA ATG TTC CTG GAG CCG CCA TAC 887 Ala Glu Glu Met Asp Pro Leu Ala Gln Met Phe Leu Glu Pro Pro Tyr 525 530 535 TAC CCT AGC CTG GAC GCC GCC AAG ACG TTT CTA GCG GAT TAC TGG GTT 935 Tyr Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Ala Asp Tyr Trp Val 540 545 550 CAG CTT CAG CAG ATG GCG GAG GCC TCT GCT CCG TCA AGA CAA AGC TGA 983 Gln Leu Gln Gln Met Ala Glu Ala Ser Ala Pro Ser Arg Gln Ser * 555 560 565 AACGGCGAAA TGGCACGGCT GAGCCACCGA ATCGCGCAGT TTTGCAGGAC TGAAGATACT 1043 ATGCATGCAT TTCGTTGGGG CCTTTTGCCC TTGTGGTGAA TGGTGATAGA GTGATTCATT 1103 TCTATAGCGA TCATGTACTA TTGCAGTACA TGTCGCACTA GAATACTAGA TTCTCTTACT 1163 ATCGTTGTGC ACTGCGTTGT ACGTGTTGTG TTCTACGTAG ATATAGATTG ATTCAGTTAG 1223 ATGTCATTTG TATTGCCAAG TAGGTCAATT GGATATGGAA CTTTTGTAAA TACCGAAATA 1283 CTGTTGTTGA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AA 1325 285 amino acids amino acid linear protein not provided 4 Met Gln Gly Cys Ala Phe Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala 1 5 10 15 Gly Lys Pro Val Leu Glu Tyr Asp Arg Val Val Arg Pro His Glu Leu 20 25 30 His Ala Leu Lys Pro Asp Pro Ala Pro Glu Pro Met Ser Gly Tyr Arg 35 40 45 Asn Arg Glu Leu Glu Thr Leu Phe Thr Met Tyr Gln Ile Leu Glu Ser 50 55 60 Trp Leu Arg Val Ala Ser Gln Leu Leu Thr Arg Leu Asp Glu Arg Ile 65 70 75 80 Glu Asp Lys Cys Trp Glu Ala Ala Ala Gly Asp Cys Trp Ile Leu Glu 85 90 95 Arg Val Trp Lys Leu Leu Ala Asp Val Glu Asp Leu His Leu Leu Met 100 105 110 Asp Pro Asp Glu Phe Leu Arg Leu Lys Ser Gln Leu Ala Val Arg Ala 115 120 125 Ala Pro Gly Ser Glu Ser Ala Ser Phe Cys Phe Arg Ser Thr Ala Leu 130 135 140 Leu His Val Ala Ser Ala Thr Arg Asp Leu Lys Lys Arg Val Pro Trp 145 150 155 160 Val Leu Gly Val Glu Ala Asp Pro Ser Gly Gly Pro Arg Val Gln Glu 165 170 175 Ala Ala Met Lys Leu Tyr His Ser Arg Arg Arg Gly Glu Gly Glu Glu 180 185 190 Ala Gly Lys Val Asp Leu Leu Gln Ala Phe Gln Ala Val Glu Val Ala 195 200 205 Val Arg Ala Phe Phe Phe Gly Tyr Arg Gln Leu Val Ala Ala Val Met 210 215 220 Gly Thr Ala Glu Ala Ser Gly Asn Arg Ala Leu Phe Val Pro Ala Glu 225 230 235 240 Glu Met Asp Pro Leu Ala Gln Met Phe Leu Glu Pro Pro Tyr Tyr Pro 245 250 255 Ser Leu Asp Ala Ala Lys Thr Phe Leu Ala Asp Tyr Trp Val Gln Leu 260 265 270 Gln Gln Met Ala Glu Ala Ser Ala Pro Ser Arg Gln Ser 275 280 285 1498 base pairs nucleic acid single linear DNA (genomic) Glycine max P12568 CDS 69..1436 5 CGACACCAAT TTCTCCATCC TCTCATTGAA AAACAAAATT AATCATCTTA CTTATTTATT 60 CTCCGAAA ATG GTT GAT TTA CAT TGG AAA TCA AAG ATG CCA AGT TCC GAC 110 Met Val Asp Leu His Trp Lys Ser Lys Met Pro Ser Ser Asp 290 295 300 ATG CCT TCC AAA ACT CTA AAA CTC TCT CTC TCC GAC AAC AAG TCC TTA 158 Met Pro Ser Lys Thr Leu Lys Leu Ser Leu Ser Asp Asn Lys Ser Leu 305 310 315 CCC TCT TTG CAA CTA CCC TTC CGC ACC ACA GAT ATC TCT CAC GCC GCA 206 Pro Ser Leu Gln Leu Pro Phe Arg Thr Thr Asp Ile Ser His Ala Ala 320 325 330 CCT TCT GTT TGC GCC ACT TAC GAC TAC TAT CTC CGT CTT CCT CAA CTC 254 Pro Ser Val Cys Ala Thr Tyr Asp Tyr Tyr Leu Arg Leu Pro Gln Leu 335 340 345 AGA AAG CTT TGG AAC TCC TCA GAT TTT CCT AAT TGG AAC AAC GAA CCA 302 Arg Lys Leu Trp Asn Ser Ser Asp Phe Pro Asn Trp Asn Asn Glu Pro 350 355 360 ATC TTA AAA CCT ATC TTG CAA GCT CTC GAA ATC ACC TTC CGC TTT CTC 350 Ile Leu Lys Pro Ile Leu Gln Ala Leu Glu Ile Thr Phe Arg Phe Leu 365 370 375 380 TCC ATT GTT CTC TCC GAT CCA AGA CCT TAC TCC AAC CAC AGA GAA TGG 398 Ser Ile Val Leu Ser Asp Pro Arg Pro Tyr Ser Asn His Arg Glu Trp 385 390 395 ACT CGC AGG ATA GAG TCT CTT ATC ACA CAT CAA ATT GAA ATC ATT GCC 446 Thr Arg Arg Ile Glu Ser Leu Ile Thr His Gln Ile Glu Ile Ile Ala 400 405 410 ATA CTT TGT GAA GAT GAG GAA CAA AAT TCC GAC ACA CGT GGC ACT GCA 494 Ile Leu Cys Glu Asp Glu Glu Gln Asn Ser Asp Thr Arg Gly Thr Ala 415 420 425 CCA ACC GCT GAT CTC AGC AGG AAC AAT AGC AGC GAG AGC AGA AGC TAC 542 Pro Thr Ala Asp Leu Ser Arg Asn Asn Ser Ser Glu Ser Arg Ser Tyr 430 435 440 AGC GAG GCA AGC CTG CTT CCG CGG CTT GCC ACG TGG TAC AAA TCC AAG 590 Ser Glu Ala Ser Leu Leu Pro Arg Leu Ala Thr Trp Tyr Lys Ser Lys 445 450 455 460 GAC GTA GCG CAG AGG ATC CTT CTC TCA GTT GAA TGC CAA ATG AGG AGG 638 Asp Val Ala Gln Arg Ile Leu Leu Ser Val Glu Cys Gln Met Arg Arg 465 470 475 TGT TCC TAC ACG CTG GGT TTG GGT GAG CCG AAC CTA GCG GGC AAA CCG 686 Cys Ser Tyr Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro 480 485 490 AGC CTG CTC TAC GAC CTC GTG TGT AAG CCG AAC GAG ATC CAC GCG CTG 734 Ser Leu Leu Tyr Asp Leu Val Cys Lys Pro Asn Glu Ile His Ala Leu 495 500 505 AAG ACG ACG CCG TAC GAT GAG CGC GTA GAG AAT CAC GAG AAC CAC GCG 782 Lys Thr Thr Pro Tyr Asp Glu Arg Val Glu Asn His Glu Asn His Ala 510 515 520 TTG CAC GCG ACG CAC CAG ATC GCC GAG TCG TGG ATC CAC GCG TCG CGG 830 Leu His Ala Thr His Gln Ile Ala Glu Ser Trp Ile His Ala Ser Arg 525 530 535 540 AAG GTT CTA GAG AGG ATC GCA GAC GCG GTG CTC TCC AGA ACC TTC GAG 878 Lys Val Leu Glu Arg Ile Ala Asp Ala Val Leu Ser Arg Thr Phe Glu 545 550 555 AAG GCG GCT GAG GAC TGC TAC GCC GTG GAA AGG ATC TGG AAG CTT CTC 926 Lys Ala Ala Glu Asp Cys Tyr Ala Val Glu Arg Ile Trp Lys Leu Leu 560 565 570 GCG GAG GTG GAG GAC CTC CAC CTG ATG ATG GAT CCG GAC GAT TTC TTG 974 Ala Glu Val Glu Asp Leu His Leu Met Met Asp Pro Asp Asp Phe Leu 575 580 585 AGA CTG AAG AAT CAG CTC TCG GTG AAA TCC TCC GGC GGC GAA ACG GCT 1022 Arg Leu Lys Asn Gln Leu Ser Val Lys Ser Ser Gly Gly Glu Thr Ala 590 595 600 TCG TTC TGC TTC AGG TCG AAG GAG TTG GTT GAA CTG ACG AAG ATG TGC 1070 Ser Phe Cys Phe Arg Ser Lys Glu Leu Val Glu Leu Thr Lys Met Cys 605 610 615 620 AGA GAT CTG AGG CAC AAG GTG CCG GAG ATA TTG GAG GTG GAG GTG GAT 1118 Arg Asp Leu Arg His Lys Val Pro Glu Ile Leu Glu Val Glu Val Asp 625 630 635 CCG AAG GGA GGA CCG AGG ATT CAA GAG GCG GCG ATG AAG CTC TAC GTT 1166 Pro Lys Gly Gly Pro Arg Ile Gln Glu Ala Ala Met Lys Leu Tyr Val 640 645 650 TCG AAG AGC GCG TTC GAG AAG GTT CAC TTG TTG CAG GCG ATG CAG GCG 1214 Ser Lys Ser Ala Phe Glu Lys Val His Leu Leu Gln Ala Met Gln Ala 655 660 665 ATT GAG GCG GCG ATG AAG AGA TTC TTC TAC GCG TAT AAG CAG GTG TTG 1262 Ile Glu Ala Ala Met Lys Arg Phe Phe Tyr Ala Tyr Lys Gln Val Leu 670 675 680 GCG GTG GTG ATG GGA AGC TCC GAG GCT AAC GGT AAC CGA GTT GGG TTG 1310 Ala Val Val Met Gly Ser Ser Glu Ala Asn Gly Asn Arg Val Gly Leu 685 690 695 700 AGT TGC GAC TCG GCT GAC TCG TTG ACT CAG ATT TTC CTT GAA CCG ACG 1358 Ser Cys Asp Ser Ala Asp Ser Leu Thr Gln Ile Phe Leu Glu Pro Thr 705 710 715 TAT TTT CCA AGC TTG GAT GCC GCC AAG ACT TTT CTT GGA TAC TTG TGG 1406 Tyr Phe Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Gly Tyr Leu Trp 720 725 730 GAT AAT AAC GAT AAT AAC AAA TGG ATA TGA TAAGGGAAAA AAAAAAAACG 1456 Asp Asn Asn Asp Asn Asn Lys Trp Ile * 735 740 GCACAAAAAC GATGGCCAAA GTGAGATTTT CGGTTTGGGC AC 1498 455 amino acids amino acid linear protein not provided 6 Met Val Asp Leu His Trp Lys Ser Lys Met Pro Ser Ser Asp Met Pro 1 5 10 15 Ser Lys Thr Leu Lys Leu Ser Leu Ser Asp Asn Lys Ser Leu Pro Ser 20 25 30 Leu Gln Leu Pro Phe Arg Thr Thr Asp Ile Ser His Ala Ala Pro Ser 35 40 45 Val Cys Ala Thr Tyr Asp Tyr Tyr Leu Arg Leu Pro Gln Leu Arg Lys 50 55 60 Leu Trp Asn Ser Ser Asp Phe Pro Asn Trp Asn Asn Glu Pro Ile Leu 65 70 75 80 Lys Pro Ile Leu Gln Ala Leu Glu Ile Thr Phe Arg Phe Leu Ser Ile 85 90 95 Val Leu Ser Asp Pro Arg Pro Tyr Ser Asn His Arg Glu Trp Thr Arg 100 105 110 Arg Ile Glu Ser Leu Ile Thr His Gln Ile Glu Ile Ile Ala Ile Leu 115 120 125 Cys Glu Asp Glu Glu Gln Asn Ser Asp Thr Arg Gly Thr Ala Pro Thr 130 135 140 Ala Asp Leu Ser Arg Asn Asn Ser Ser Glu Ser Arg Ser Tyr Ser Glu 145 150 155 160 Ala Ser Leu Leu Pro Arg Leu Ala Thr Trp Tyr Lys Ser Lys Asp Val 165 170 175 Ala Gln Arg Ile Leu Leu Ser Val Glu Cys Gln Met Arg Arg Cys Ser 180 185 190 Tyr Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro Ser Leu 195 200 205 Leu Tyr Asp Leu Val Cys Lys Pro Asn Glu Ile His Ala Leu Lys Thr 210 215 220 Thr Pro Tyr Asp Glu Arg Val Glu Asn His Glu Asn His Ala Leu His 225 230 235 240 Ala Thr His Gln Ile Ala Glu Ser Trp Ile His Ala Ser Arg Lys Val 245 250 255 Leu Glu Arg Ile Ala Asp Ala Val Leu Ser Arg Thr Phe Glu Lys Ala 260 265 270 Ala Glu Asp Cys Tyr Ala Val Glu Arg Ile Trp Lys Leu Leu Ala Glu 275 280 285 Val Glu Asp Leu His Leu Met Met Asp Pro Asp Asp Phe Leu Arg Leu 290 295 300 Lys Asn Gln Leu Ser Val Lys Ser Ser Gly Gly Glu Thr Ala Ser Phe 305 310 315 320 Cys Phe Arg Ser Lys Glu Leu Val Glu Leu Thr Lys Met Cys Arg Asp 325 330 335 Leu Arg His Lys Val Pro Glu Ile Leu Glu Val Glu Val Asp Pro Lys 340 345 350 Gly Gly Pro Arg Ile Gln Glu Ala Ala Met Lys Leu Tyr Val Ser Lys 355 360 365 Ser Ala Phe Glu Lys Val His Leu Leu Gln Ala Met Gln Ala Ile Glu 370 375 380 Ala Ala Met Lys Arg Phe Phe Tyr Ala Tyr Lys Gln Val Leu Ala Val 385 390 395 400 Val Met Gly Ser Ser Glu Ala Asn Gly Asn Arg Val Gly Leu Ser Cys 405 410 415 Asp Ser Ala Asp Ser Leu Thr Gln Ile Phe Leu Glu Pro Thr Tyr Phe 420 425 430 Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Gly Tyr Leu Trp Asp Asn 435 440 445 Asn Asp Asn Asn Lys Trp Ile 450 455 1418 base pairs nucleic acid single linear cDNA Glycine max CDS 46..1401 7 CACCAAACAA AAAAATCAAT CATTTTATTT TATTTTTCTA CGAAA ATG GTT GAT 54 Met Val Asp TTA CAT TGG AAA TCA AAG ATG CCT AGT TCC AAA ACA CCA AAA CTC TCT 102 Leu His Trp Lys Ser Lys Met Pro Ser Ser Lys Thr Pro Lys Leu Ser 460 465 470 475 CTC TCC GAC AAC AAG TCC TTA CCC TCT TTG CAA CTA CCC TTC CGC ACC 150 Leu Ser Asp Asn Lys Ser Leu Pro Ser Leu Gln Leu Pro Phe Arg Thr 480 485 490 ACA GAT ATC TCT CCC GCC GCT CCT TCC GTT TGC GCC GCT TAC GAC TAC 198 Thr Asp Ile Ser Pro Ala Ala Pro Ser Val Cys Ala Ala Tyr Asp Tyr 495 500 505 TAT CTC CGT CTT CCT CAA CTC AGA AAG CTT TGG AAC TCC ACT GAT TTT 246 Tyr Leu Arg Leu Pro Gln Leu Arg Lys Leu Trp Asn Ser Thr Asp Phe 510 515 520 CCT AAT TGG AAC AAC GAA CCG ATT CTA AAA CCA ATT TTG CAA GCT CTC 294 Pro Asn Trp Asn Asn Glu Pro Ile Leu Lys Pro Ile Leu Gln Ala Leu 525 530 535 GAA ATC ACG TTC CGC TTT CTT TCC ATT GTT CTC TCC GAT CCC AGA CCT 342 Glu Ile Thr Phe Arg Phe Leu Ser Ile Val Leu Ser Asp Pro Arg Pro 540 545 550 555 TAC TCC AAC CAC AGA GAA TGG ACT CGC CGG ATA GAG TCT CTC ATC ATG 390 Tyr Ser Asn His Arg Glu Trp Thr Arg Arg Ile Glu Ser Leu Ile Met 560 565 570 CAT CAA ATT GAA ATC ATT GCC ATA CTT TGT GAA GAA GAG GAA CAA AAT 438 His Gln Ile Glu Ile Ile Ala Ile Leu Cys Glu Glu Glu Glu Gln Asn 575 580 585 TCC GAC ACA CGT GGC ACT GCA CCA ACC GCT GAT CTC AGC AGC AGC AAT 486 Ser Asp Thr Arg Gly Thr Ala Pro Thr Ala Asp Leu Ser Ser Ser Asn 590 595 600 AGC AGC GTG AGC AGA AGC TAC AGC GAG GCG AGC CTG CTT CCT CGG CTT 534 Ser Ser Val Ser Arg Ser Tyr Ser Glu Ala Ser Leu Leu Pro Arg Leu 605 610 615 GCC ACG TGG TAC AAA TCC AGG GAC GTG GCG CAG AGG ATC CTT CTC TCC 582 Ala Thr Trp Tyr Lys Ser Arg Asp Val Ala Gln Arg Ile Leu Leu Ser 620 625 630 635 GTG GAA TGC CAA ATG AGG AGG TGC TCC TAC ACG CTT GGT TTG GGC GAG 630 Val Glu Cys Gln Met Arg Arg Cys Ser Tyr Thr Leu Gly Leu Gly Glu 640 645 650 CCG AAC CTA GCG GGG AAG CCG AGC CTG CTC TAC GAC CTC GTG TGC AAG 678 Pro Asn Leu Ala Gly Lys Pro Ser Leu Leu Tyr Asp Leu Val Cys Lys 655 660 665 CCG AAT GAG ATC CAC GCG CTG AAG ACG ACG CCG TAC GAC GAG CGC GTG 726 Pro Asn Glu Ile His Ala Leu Lys Thr Thr Pro Tyr Asp Glu Arg Val 670 675 680 GAG AAC CAC GAG AAC CAC GCG GTG CAC GCC ACG CAC CAG ATC GCG GAG 774 Glu Asn His Glu Asn His Ala Val His Ala Thr His Gln Ile Ala Glu 685 690 695 TCG TGG ATT CAC GCG TCG CGG AAG GTT CTG GAG AGA ATC GCG GAC GCG 822 Ser Trp Ile His Ala Ser Arg Lys Val Leu Glu Arg Ile Ala Asp Ala 700 705 710 715 GTG CTC TCC AGA ACC TTC CTG AAA GCA GCA GAG GAC TGC TAC GCC GTG 870 Val Leu Ser Arg Thr Phe Leu Lys Ala Ala Glu Asp Cys Tyr Ala Val 720 725 730 GAG AGG ATC TGG AAG CTT CTC GCG GAG GTG GAG GAC CTC CAC CTG ATG 918 Glu Arg Ile Trp Lys Leu Leu Ala Glu Val Glu Asp Leu His Leu Met 735 740 745 ATG GAT CCG GAC GAT TTC TTG AGG CTA AAG AAT CAA CTC TCG GTG AAA 966 Met Asp Pro Asp Asp Phe Leu Arg Leu Lys Asn Gln Leu Ser Val Lys 750 755 760 TCC TCG AGC GGC GAA ACG GCA TCG TTC TGC TTC AGA TCG AAT GAG TTA 1014 Ser Ser Ser Gly Glu Thr Ala Ser Phe Cys Phe Arg Ser Asn Glu Leu 765 770 775 GTG GAA CTG ACG AAG ATG TGC AGA GAT CTG AGG CAC AAG GTG CCG GAG 1062 Val Glu Leu Thr Lys Met Cys Arg Asp Leu Arg His Lys Val Pro Glu 780 785 790 795 ATA TTG GAG GTG GAG GTG GAT CCG AAG GGA GGA CCG AGG ATT CAA GAG 1110 Ile Leu Glu Val Glu Val Asp Pro Lys Gly Gly Pro Arg Ile Gln Glu 800 805 810 GCG GCG ATG AAG CTC TAC GTT TCG AAG AGC GAG TTC GAG AAG GTT CAC 1158 Ala Ala Met Lys Leu Tyr Val Ser Lys Ser Glu Phe Glu Lys Val His 815 820 825 TTG TTG CAG GCG ATG CAG GCG ATT GAG GCG GCG ATG AAG AGA TTC TTC 1206 Leu Leu Gln Ala Met Gln Ala Ile Glu Ala Ala Met Lys Arg Phe Phe 830 835 840 TAC GCG TAT AAG CAG GTG TTG GCG GTG GTG ATG GGA AGT TCA GAG GCT 1254 Tyr Ala Tyr Lys Gln Val Leu Ala Val Val Met Gly Ser Ser Glu Ala 845 850 855 AAC GGT AAC CGA GTT GGG TTG AGT TGC GAC TCG GCT GAC TCG TTG ACT 1302 Asn Gly Asn Arg Val Gly Leu Ser Cys Asp Ser Ala Asp Ser Leu Thr 860 865 870 875 CAG ATT TTC CTT GAA CCG ACG TAT TTT CCA AGC TTG GAT GCC GCC AAG 1350 Gln Ile Phe Leu Glu Pro Thr Tyr Phe Pro Ser Leu Asp Ala Ala Lys 880 885 890 ACT TTT CTT GGA TAC CTG TGG GAT AAT AAC GAT AAT AAC AAA TGG ATA 1398 Thr Phe Leu Gly Tyr Leu Trp Asp Asn Asn Asp Asn Asn Lys Trp Ile 895 900 905 TGA AAACGAAAAA AAAAAAA 1418 * 451 amino acids amino acid linear protein not provided 8 Met Val Asp Leu His Trp Lys Ser Lys Met Pro Ser Ser Lys Thr Pro 1 5 10 15 Lys Leu Ser Leu Ser Asp Asn Lys Ser Leu Pro Ser Leu Gln Leu Pro 20 25 30 Phe Arg Thr Thr Asp Ile Ser Pro Ala Ala Pro Ser Val Cys Ala Ala 35 40 45 Tyr Asp Tyr Tyr Leu Arg Leu Pro Gln Leu Arg Lys Leu Trp Asn Ser 50 55 60 Thr Asp Phe Pro Asn Trp Asn Asn Glu Pro Ile Leu Lys Pro Ile Leu 65 70 75 80 Gln Ala Leu Glu Ile Thr Phe Arg Phe Leu Ser Ile Val Leu Ser Asp 85 90 95 Pro Arg Pro Tyr Ser Asn His Arg Glu Trp Thr Arg Arg Ile Glu Ser 100 105 110 Leu Ile Met His Gln Ile Glu Ile Ile Ala Ile Leu Cys Glu Glu Glu 115 120 125 Glu Gln Asn Ser Asp Thr Arg Gly Thr Ala Pro Thr Ala Asp Leu Ser 130 135 140 Ser Ser Asn Ser Ser Val Ser Arg Ser Tyr Ser Glu Ala Ser Leu Leu 145 150 155 160 Pro Arg Leu Ala Thr Trp Tyr Lys Ser Arg Asp Val Ala Gln Arg Ile 165 170 175 Leu Leu Ser Val Glu Cys Gln Met Arg Arg Cys Ser Tyr Thr Leu Gly 180 185 190 Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro Ser Leu Leu Tyr Asp Leu 195 200 205 Val Cys Lys Pro Asn Glu Ile His Ala Leu Lys Thr Thr Pro Tyr Asp 210 215 220 Glu Arg Val Glu Asn His Glu Asn His Ala Val His Ala Thr His Gln 225 230 235 240 Ile Ala Glu Ser Trp Ile His Ala Ser Arg Lys Val Leu Glu Arg Ile 245 250 255 Ala Asp Ala Val Leu Ser Arg Thr Phe Leu Lys Ala Ala Glu Asp Cys 260 265 270 Tyr Ala Val Glu Arg Ile Trp Lys Leu Leu Ala Glu Val Glu Asp Leu 275 280 285 His Leu Met Met Asp Pro Asp Asp Phe Leu Arg Leu Lys Asn Gln Leu 290 295 300 Ser Val Lys Ser Ser Ser Gly Glu Thr Ala Ser Phe Cys Phe Arg Ser 305 310 315 320 Asn Glu Leu Val Glu Leu Thr Lys Met Cys Arg Asp Leu Arg His Lys 325 330 335 Val Pro Glu Ile Leu Glu Val Glu Val Asp Pro Lys Gly Gly Pro Arg 340 345 350 Ile Gln Glu Ala Ala Met Lys Leu Tyr Val Ser Lys Ser Glu Phe Glu 355 360 365 Lys Val His Leu Leu Gln Ala Met Gln Ala Ile Glu Ala Ala Met Lys 370 375 380 Arg Phe Phe Tyr Ala Tyr Lys Gln Val Leu Ala Val Val Met Gly Ser 385 390 395 400 Ser Glu Ala Asn Gly Asn Arg Val Gly Leu Ser Cys Asp Ser Ala Asp 405 410 415 Ser Leu Thr Gln Ile Phe Leu Glu Pro Thr Tyr Phe Pro Ser Leu Asp 420 425 430 Ala Ala Lys Thr Phe Leu Gly Tyr Leu Trp Asp Asn Asn Asp Asn Asn 435 440 445 Lys Trp Ile 450 1498 base pairs nucleic acid single linear DNA (genomic) Glycine max CDS 69..1436 9 CGACACCAAT TTCTCCATCC TCTCATTGAA AAACAAAATT AATCATCTTA TTTATTTATT 60 CTCCGAAA ATG GTT GAT TTA CAT TGG AAA TCA AAG ATG CCA AGT TCC GAC 110 Met Val Asp Leu His Trp Lys Ser Lys Met Pro Ser Ser Asp 455 460 465 ATG CCT TCC AAA ACT CTC AAA CTC TCT CTC TCC GAC AAC AAG TCC TTA 158 Met Pro Ser Lys Thr Leu Lys Leu Ser Leu Ser Asp Asn Lys Ser Leu 470 475 480 CCC TCT TTG CAA CTA CCC TTC CGC ACC ACA GAT ATC TCT CAC GCC GCA 206 Pro Ser Leu Gln Leu Pro Phe Arg Thr Thr Asp Ile Ser His Ala Ala 485 490 495 CCT TCT GTT TGC GCC ACT TAC GAC TAC TAT CTC CGT CTT CCT CAA CTC 254 Pro Ser Val Cys Ala Thr Tyr Asp Tyr Tyr Leu Arg Leu Pro Gln Leu 500 505 510 AGA AAG CTT TGG AAC TCC TCA GAT TTT CCT AAT TGG AAC AAC GAA CCA 302 Arg Lys Leu Trp Asn Ser Ser Asp Phe Pro Asn Trp Asn Asn Glu Pro 515 520 525 530 ATC TTA AAA CCT ATC TTG CAA GCT CTC GAA ATC ACC TTC CGC TTT CTC 350 Ile Leu Lys Pro Ile Leu Gln Ala Leu Glu Ile Thr Phe Arg Phe Leu 535 540 545 TCC ATT GTT CTC TCC GAT CCA AGA CCT TAC TCC AAC CAC AGA GAA TGG 398 Ser Ile Val Leu Ser Asp Pro Arg Pro Tyr Ser Asn His Arg Glu Trp 550 555 560 ACT CGC AGG ATA GAG TCT CTT ATC ACA CAT CAA ATT GAA ATC ATT GCC 446 Thr Arg Arg Ile Glu Ser Leu Ile Thr His Gln Ile Glu Ile Ile Ala 565 570 575 ATA CTT TGT GAA GAT GAG GAA CAA AAT TCC GAC ACA CGT GGC ACT GCA 494 Ile Leu Cys Glu Asp Glu Glu Gln Asn Ser Asp Thr Arg Gly Thr Ala 580 585 590 CCA ACC GCT GAT CTC AGC AGG AAC AAT AGC AGC GAG AGC AGA AGC TAC 542 Pro Thr Ala Asp Leu Ser Arg Asn Asn Ser Ser Glu Ser Arg Ser Tyr 595 600 605 610 AGC GAG GCA AGC CTG CTT CCG CGG CTT GCC ACG TGG TAC AAA TCC AAG 590 Ser Glu Ala Ser Leu Leu Pro Arg Leu Ala Thr Trp Tyr Lys Ser Lys 615 620 625 GAC GTA GCG CAG AGG ATC CTT CTC TCA GTT GAA TGC CAA ATG AGG AGG 638 Asp Val Ala Gln Arg Ile Leu Leu Ser Val Glu Cys Gln Met Arg Arg 630 635 640 TGT TCC TAC ACG CTG GGT TTG GGT GAG CCG AAC CTA GCG GGC AAA CCG 686 Cys Ser Tyr Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro 645 650 655 AGC CTG CTC TAC GAC CTC GTG TGC AAG CCG AAC GAG ATC CAC GCG CTG 734 Ser Leu Leu Tyr Asp Leu Val Cys Lys Pro Asn Glu Ile His Ala Leu 660 665 670 AAG ACG ACG CCG TAC GAT GAG CGC GTA GAG AAT CAC GAG AAC CAC GCG 782 Lys Thr Thr Pro Tyr Asp Glu Arg Val Glu Asn His Glu Asn His Ala 675 680 685 690 TTG CAC GCG ACG CAC CAG ATC GCC GAG TCG TGG ATC CAC GCG TCG CGG 830 Leu His Ala Thr His Gln Ile Ala Glu Ser Trp Ile His Ala Ser Arg 695 700 705 AAG GTT CTA GAG AGG ATC GCA GAC GCG GTC CTC TCC AGA ACC TTC GAG 878 Lys Val Leu Glu Arg Ile Ala Asp Ala Val Leu Ser Arg Thr Phe Glu 710 715 720 AAG GCG GCT GAG GAC TGC TAC GCC GTG GAA AGG ATC TGG AAG CTT CTC 926 Lys Ala Ala Glu Asp Cys Tyr Ala Val Glu Arg Ile Trp Lys Leu Leu 725 730 735 GCG GAG GTG GAG GAC CTC CAC CTG ATG ATG GAT CCG GAC GAT TTC TTG 974 Ala Glu Val Glu Asp Leu His Leu Met Met Asp Pro Asp Asp Phe Leu 740 745 750 AGA CTG AAG AAT CAG CTC TCG GTG AAA TCC TCC GGC GGC GAA ACG GCT 1022 Arg Leu Lys Asn Gln Leu Ser Val Lys Ser Ser Gly Gly Glu Thr Ala 755 760 765 770 TCG TTC TGC TTC AGG TCG AAG GAG TTG GTT GAA CTG ACG AAG ATG TGC 1070 Ser Phe Cys Phe Arg Ser Lys Glu Leu Val Glu Leu Thr Lys Met Cys 775 780 785 AGA GAT CTG AGG CAC AAG GTG CCG GAG ATA TTG GAG GTG GAG GTG GAT 1118 Arg Asp Leu Arg His Lys Val Pro Glu Ile Leu Glu Val Glu Val Asp 790 795 800 CCG AAG GGA GGA CCG AGG ATT CAA GAG GCG GCG ATG AAG CTC TAC GTT 1166 Pro Lys Gly Gly Pro Arg Ile Gln Glu Ala Ala Met Lys Leu Tyr Val 805 810 815 TCG AAG AGC GCG TTC GAG AAG GTT CAC TTG TTG CAG GCG ATG CAG GCG 1214 Ser Lys Ser Ala Phe Glu Lys Val His Leu Leu Gln Ala Met Gln Ala 820 825 830 ATT GAG GCG GCG ATG AAG AGA TTC TTC TAC GCG TAT AAG CAG GTG TTG 1262 Ile Glu Ala Ala Met Lys Arg Phe Phe Tyr Ala Tyr Lys Gln Val Leu 835 840 845 850 GCG GTG GTG ATG GGA AGC TCC GAG GCT AAC GGT AAC CGA GTT GGG TTG 1310 Ala Val Val Met Gly Ser Ser Glu Ala Asn Gly Asn Arg Val Gly Leu 855 860 865 AGT TGC GAC TCG GCT GAC TCG TTG ACT CAG ATT TTC CTT GAA CCG ACG 1358 Ser Cys Asp Ser Ala Asp Ser Leu Thr Gln Ile Phe Leu Glu Pro Thr 870 875 880 TAT TTT CCA AGC TTG GAT GCC GCC AAG ACT TTT CTT GGA TAC TTG TGG 1406 Tyr Phe Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Gly Tyr Leu Trp 885 890 895 GAT AAT AAC GAT AAT AAC AAA TGG ATA TGA TAAGGGAAAA AAAAAAAACG 1456 Asp Asn Asn Asp Asn Asn Lys Trp Ile * 900 905 GCACAAAAAC GATGGCCAAA GTGAGATTTT CGGTTTGGGC AC 1498 455 amino acids amino acid linear protein not provided 10 Met Val Asp Leu His Trp Lys Ser Lys Met Pro Ser Ser Asp Met Pro 1 5 10 15 Ser Lys Thr Leu Lys Leu Ser Leu Ser Asp Asn Lys Ser Leu Pro Ser 20 25 30 Leu Gln Leu Pro Phe Arg Thr Thr Asp Ile Ser His Ala Ala Pro Ser 35 40 45 Val Cys Ala Thr Tyr Asp Tyr Tyr Leu Arg Leu Pro Gln Leu Arg Lys 50 55 60 Leu Trp Asn Ser Ser Asp Phe Pro Asn Trp Asn Asn Glu Pro Ile Leu 65 70 75 80 Lys Pro Ile Leu Gln Ala Leu Glu Ile Thr Phe Arg Phe Leu Ser Ile 85 90 95 Val Leu Ser Asp Pro Arg Pro Tyr Ser Asn His Arg Glu Trp Thr Arg 100 105 110 Arg Ile Glu Ser Leu Ile Thr His Gln Ile Glu Ile Ile Ala Ile Leu 115 120 125 Cys Glu Asp Glu Glu Gln Asn Ser Asp Thr Arg Gly Thr Ala Pro Thr 130 135 140 Ala Asp Leu Ser Arg Asn Asn Ser Ser Glu Ser Arg Ser Tyr Ser Glu 145 150 155 160 Ala Ser Leu Leu Pro Arg Leu Ala Thr Trp Tyr Lys Ser Lys Asp Val 165 170 175 Ala Gln Arg Ile Leu Leu Ser Val Glu Cys Gln Met Arg Arg Cys Ser 180 185 190 Tyr Thr Leu Gly Leu Gly Glu Pro Asn Leu Ala Gly Lys Pro Ser Leu 195 200 205 Leu Tyr Asp Leu Val Cys Lys Pro Asn Glu Ile His Ala Leu Lys Thr 210 215 220 Thr Pro Tyr Asp Glu Arg Val Glu Asn His Glu Asn His Ala Leu His 225 230 235 240 Ala Thr His Gln Ile Ala Glu Ser Trp Ile His Ala Ser Arg Lys Val 245 250 255 Leu Glu Arg Ile Ala Asp Ala Val Leu Ser Arg Thr Phe Glu Lys Ala 260 265 270 Ala Glu Asp Cys Tyr Ala Val Glu Arg Ile Trp Lys Leu Leu Ala Glu 275 280 285 Val Glu Asp Leu His Leu Met Met Asp Pro Asp Asp Phe Leu Arg Leu 290 295 300 Lys Asn Gln Leu Ser Val Lys Ser Ser Gly Gly Glu Thr Ala Ser Phe 305 310 315 320 Cys Phe Arg Ser Lys Glu Leu Val Glu Leu Thr Lys Met Cys Arg Asp 325 330 335 Leu Arg His Lys Val Pro Glu Ile Leu Glu Val Glu Val Asp Pro Lys 340 345 350 Gly Gly Pro Arg Ile Gln Glu Ala Ala Met Lys Leu Tyr Val Ser Lys 355 360 365 Ser Ala Phe Glu Lys Val His Leu Leu Gln Ala Met Gln Ala Ile Glu 370 375 380 Ala Ala Met Lys Arg Phe Phe Tyr Ala Tyr Lys Gln Val Leu Ala Val 385 390 395 400 Val Met Gly Ser Ser Glu Ala Asn Gly Asn Arg Val Gly Leu Ser Cys 405 410 415 Asp Ser Ala Asp Ser Leu Thr Gln Ile Phe Leu Glu Pro Thr Tyr Phe 420 425 430 Pro Ser Leu Asp Ala Ala Lys Thr Phe Leu Gly Tyr Leu Trp Asp Asn 435 440 445 Asn Asp Asn Asn Lys Trp Ile 450 455 

What is claimed is:
 1. An isolated DNA sequence comprising a nucleotide sequence that encodes a protein which confers nematode resistance to a plant, selected from the group consisting of: a) a nucleotide sequence set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, or SEQ ID NO: 7; and b) a nucleotide sequence encoding a plant protein, said sequence contained in a plasmid deposited as ATCC accession number 209366, 209365, 209614, 209363, or
 209364. 2. A transformation vector comprising the DNA sequence of claim
 1. 3. A plant cell which has been transformed with a nucleotide sequence encoding a protein involved in nematode resistance, said nucleotide sequence encoding a protein comprising an amino acid sequence selected from the group consisting of the amino acid sequences set forth in SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, and SEQ ID NO:
 8. 4. The plant cell of claim 3, wherein said nucleotide sequence comprises a nucleotide sequence selected from the group consisting of the sequences set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, and SEQ ID NO:
 7. 5. An isolated DNA sequence comprising a nucleotide sequence that encodes a protein that confers nematode resistance to a plant, wherein said nucleotide sequence has at least 80% identity, using the homology alignment algorithm of Needleman and Wunsch, to a sequence selected from the group consisting of: a) the nucleotide sequence set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, or SEQ ID NO: 7; and b) a nucleotide sequence encoding a plant protein, said sequence contained in a plasmid having ATCC accession number 209366, 209365, 209614, 209363, or 209364; and wherein the protein encoded by said nucleotide sequence has the nematode resistance properties of SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, or SEQ ID NO:
 8. 6. A transformation vector comprising the DNA sequence of claim
 5. 7. A plant that has been transformed with the transformation vector of claim
 6. 8. An isolated DNA sequence comprising a nucleotide sequence that encodes a protein that confers nematode resistance to a plant, wherein said nucleotide sequence has at least 90% identity, using the homology alignment algorithm of Needleman and Wunsch, to a sequence selected from the group consisting of: a) the nucleotide sequence set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, or SEQ ID NO: 7; and b) a nucleotide sequence encoding a plant protein, said sequence contained in a plasmid having ATCC accession number 209366, 209365, 209614, 209363, or 209364; and wherein the protein encoded by said nucleotide sequence has the nematode resistance properties of SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, or SEQ ID NO:
 8. 9. An isolated DNA sequence comprising a nucleotide sequence that encodes a protein that confers nematode resistance to a plant, wherein said nucleotide sequence has at least 95% identity, using the homology alignment algorithm of Needleman and Wunsch, to a sequence selected from the group consisting of: a) the nucleotide sequence set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, or SEQ ID NO: 7; and b) a nucleotide sequence encoding a plant protein, said sequence contained in a plasmid having ATCC accession number 209366, 209365, 209614, 209363, or 209364; and wherein the protein encoded by said nucleotide sequence has the nematode resistance properties of SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, or SEQ ID NO:
 8. 10. An isolated DNA sequence comprising a nucleotide sequence that encodes a protein that confers nematode resistance to a plant, and having an amino acid sequence set forth in SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, or SEQ ID NO:
 8. 11. A transformation vector comprising the DNA sequence of claim
 10. 12. A plant that has been transformed with the transformation vector of claim
 11. 13. A plant transformed with a DNA sequence comprising a nucleotide sequence encoding a protein having an amino acid sequence selected from the group consisting of the amino acid sequences set forth in SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, and SEQ ID NO: 8; wherein said plant exhibits enhanced resistance to nematodes relative to a plant not transformed with said DNA sequence.
 14. The plant of claim 13, wherein said DNA sequence is selected from the group consisting of the sequences set forth in SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, and SEQ ID NO:
 7. 15. A plant according to claim 14, wherein said plant is a dicot.
 16. A plant according to claim 14, wherein said plant is a monocot.
 17. A plant according to claim 15, wherein said plant is a soybean plant.
 18. A plant according to claim 16, wherein said plant is a cereal plant.
 19. Transformed seed of the plant of any one of claims 13, 15, 16, 17 or
 18. 